Sliding-door lock



(No Model.)

G. A. OOLTON. SLIDING DOOR LOGK.

Patented Dec. 30,1890.

UNITED STATES PATENT Orricn.

GEORGE A. COLTON, OF CHICAGO, ILLINOIS.

SLIDING-DOOR LOCK.

SPECIFICATION forming part of Letters Patent No. 443,899, dated December 30, 1890.

Application filed August 21, 1890- Serial No. 362,615. (No model.)

T0 all 1071 0722 it 'nmy concern:

Be it known that I, GEORGE A. COLTON, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain newand useful lrnprovements in Sliding-Door Locks, of which the following is a specification, reference being had therein to the accompanying drawlugs.

This invention relates to certain new and useful improvements in combined locks and latches designed more particularly for use upon sliding doors; and it has for its objects, among others, to provide a reversible lock and latch readily changed from right to left, or vice versa, by simply changing the plate covering the hand-hole, which necessitates simply the removal and replacing of a single screw.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the let ters of reference marked thereon, form a part of this specification, and in which- Figure 1 is a plan View of the improved lock and latch with the face-plate removed, showing also the keeper. Fig. 2 is a like view with the keeper and some of the parts of the lock removed. Fig. 3 is a side view of the safety-lock removed. Fig. 4 is a bottom plan of a portion of the escutoheon or hand-plate removed.

Like letters of reference indicate like parts throughout the several views.

Referring now to details of the drawings by letter, A designates the case which incloses the operative parts of the lock and formed with aperture a at one edge, through which the bolt works. The case is provided interiorly with a screw-threaded boss a to receive the screw which secures the face-plate in position and with openings a to receive additional screws for holding the lock to door.

B is the stud within the case and on which is pivoted a wing B, designed to close a portion of the aperture a, having ears or lugs I),

which partially embrace the said lug, as seen in- Figs. 1 and 2, the said wing being normally forced outward into the position in which it serves to close the aperture and prevent in- I gress of dirt, being readily moved away by contact with the hook of the keeper, as shown in Fig. l.

The case is provided opposite the aperture to with a projecting lip'or flange A, and the face-plate should be provided with a corresponding lip or flange which serves to prevent the moving of the look by the insertion of a thin instrument. These flanges or lips are shown as formed upon the arc of a circle to conform to the curvature of the keeper 0, which is provided with a latch C, as seen in Fig. 1, in which figure the parts are shown as locked. This keeper is designed to be secured in position in any suitable manner.

D is the bolt, )ivoted at d in the case and provided at its outer end with a latch d to engage the latch ofthe keeper, as seen in Fig. 1, the said latch having an extension (1 for the purpose hereinafter described. It is also form ed with a notch d into which the free end of the wing B engages when the bolt is locked and prevents forcinginward of said wing. The bolt is also provided with a shoulder d to engage a stud D, as seen in Fig. 1, to relieve the bolt of strain.

E is a spring coiled around the stud e in the case, with one end bearing against the wall of the case and the, other end against the bolt, being preferably confined between lugs e on said bolt.

F is the hand-hole, which is covered upon one side by a late F, which is held in position by a screw or other suitable means, (not shown,) which passes through the lug f on the inner face of the case or face-plate, as the case may be. I provide one of these lugs upon the face-plate and one upon the case, so that by simply removing said screw and reversing the plate the latch may be converted into either a left or right hand one, as may be desired. This is important, as the dealer is thus permitted to carry less stock and always has, if he has any, the lock called for, either right or left hand.

G is the thumb-piece, pivoted on a stud g and arranged to be operated by the thumb or finger placed through said hand-hole, and of which hole the said thumbpiece forms one wall. At its free end it'is formed with a notch g, designed to engage the rim 9 surrounding the hand-hole and limiting the movement of the thumb-piece. The thumbpiece is provided with an ear or lug g", which carries a pivot-pin or projection y, which forms a connection between the thumb-piece and the lug orear g on the bolt,so that movement of the thumb-piece actuates said bolt.

II is a stud in the case, and on which are pivoted the tn mblers I, each provided witha spring 27, seated and held in an inclined notch in the tumblers, with its other end bearing against a lug t" on the case. The tumblers are provided near their free ends with an opening I, in which works the lug J on the lever K, which lever is pivoted in the case at 7. with one end arranged beneath the tnmblers in the path of the key and the other end provided with a projection is, which engages the end'ot the extension (Z of the bolt, as seen in Fig. 1.

L is the key-receiving sleeve or boss adapted to receive the key from either side of the case and turning on pintles held in the case and face-plate.

' M is a spring arranged to bear upon the said sleeve to normally keep it in its correct position.

In order to lock the latch or bolt in either condition, I provide a disk N, suitably retained within the case and provided upon either side with a thumb or finger piece 12, which projects through openings in the case and faceplate, so as to be operated on either side. This disk carries an arm N, as seen in Figs. 1 and 3, which is designed to engage either back of the extension (Z on the bolt to hold the same in one position or into the position shown in dotted lines in Fig. 1 to hold the latch in its locked position. hen the said arm is in either of these two positions, the latch cannot be operated by the key. A spring 0 is provided to keep the disk in its adjusted position.

In Fig. 4 I have shown a portion of aha-11dplate or escutcheon. It is provided upon its back face with pins or points 0. \Vhen this plate is held in position and forced against the door, the points leave marks which serve as guides or centers to bore for said plates,

the case arranged in the path of and adapted to be moved by the engagement of the latch of the keeper therewith, as set forth.

The combination, with the case and the pivoted latch having a notch, of the swinging plate or wing within the case, adapted to close the aperture and to engage the said notch, substantially as described.

4. The combination, with the case and the pivoted latch having a notch, of the swinging plate or wing within the case and aspringarrai'iged between the wing and the stud upon which it is pivoted and acting upon the wing to normally close the aperture through which the latch projects, substantially as specified.

5. The combination, with the case and the pivoted latch, of the lever pivoted within the case independent of the latch and arranged to engage the latch and to be actuated by the key through the medium of the tumblers, substantially as described.

6. The combination, with the case and the pivoted latch, of the disk having a thumbpieee upon either side and arranged to be operated at either side of the case, and provided with an arm to engage the latch to hold it either in its locked or unlocked position, substantially as described.

'7. The combination, with the case having latch-aperture at one side, of the pivoted latch working through said aperture and having extension (1 of the swinging plate or wing B. the disk having an arm N, and the keeper ha ving a latch, substantially as shown and described.

8. The combination, with the case and the "pivoted latch, of the pivoted thumb-piecepivotally connected with the latch between the pivots of the two parts, and a spring bearing against the latch opposite its connection with the thumb-piece, substantially as described. In testimony whereof I atlix mysignaturc in presence of two witnesses.

GEORGE A. (FULTON. \Vitnesses:

II. C. Snow, CHAS. A. Woonntrr. 

